It means short-tailed or trimmed tail. It is the name of a genus of birds that belongs to the family Caprimulgidae. They are known as atajacaminos, chotacabras, cuyeos, gallinasciegas, añaperos, zumayas, engañapastores.
Systellura : Genus of caprimulgiform birds of the family of the caprimulginos, typical of South America.